Instruction Manual
DPA-18 Air Hyd. Power Unit - V1.0
www.durapac.com
Page 7 of 11
6.0
Maintenance
IMPORTANT:
Check oil level regularly
Use only good quality hydraulic fluid.
Do NOT
use brake fluid, transmission fluid,
turbine oil, motor oil, alcohol, glycerine etc. Use of anything other than good quality
hydraulic oil will void warranty and damage the power unit, hose, and application. We
recommend Durapac Hydraulic Oil or equivalent
Equipment must only be serviced by a qualified hydraulic technician. For repair service,
contact your local Durapac authorised service centre
Damage to hydraulic hoses may not be detected during visual inspections. For this
reason, Durapac recommends that hydraulic hoses be replaced on a regular basis
Tighten connections as needed. Use non-hardening pipe thread compound when
servicing connections
Dirt, sand, etc. will quickly ruin any hydraulic system. Ensure that couplings are clean and free of
foreign matter. After each use, clean couplings and attach dust caps.
Maintenance is required when wear or leakage is noticed. Periodically inspect all components to
detect any problem that may require service and maintenance.
6.1
Adding Hydraulic Fluid
WARNING: Always add oil with pump fully retracted or the system will contain more oil
than the reservoir can hold
6.1.1
Depressurise and disconnect hydraulic hose from application/cylinder.
6.1.2
With the power unit in its upright, horizontal position, remove the air vent plug
located on top of the reservoir.
6.1.3
Use a small funnel to fill the reservoir to within 12.7 mm (0.5 ") from the
oil/vent cap.
6.1.4
Bleed air from system if necessary.
6.1.5
Wipe up any spilled fluid and reinstall the air vent plug/reservoir cap.
6.2
Bleeding Air from the System
6.2.1
Repeat Steps 6.1.1 to 6.1.3 (above), if required.
6.2.2
Invert cylinder and place at a lower level than the power unit reservoir.
6.2.3
Extend and retract the cylinder several times without putting a load on the
system. Air will be released into the power unit reservoir.
6.2.4
Recheck oil level after removing air.
6.3
Changing Hydraulic Fluid
For best results, change fluid once a year or every 300 hours of use
6.3.1
Repeat Steps 6.1.1 to 6.1.2 (above).
